Control device for indexing and phototranscription machines



Sept. 17, 1940.

L. G. TowNsEND CONTROL DEVICE FOR INDEXING AND PHOTOTRANSCRIPTIONMACHINES Filed Aug. -l0, 1939 HTTOIP/YFY Patented Sept. 17, 1940 cvmitral) STATES CONTROL DEVICE FOR INDEXING PHOTOTRANSCRIPTION MACHINESLeonardr G. Townsend, Washington, D C. Application-August 10, 1939,Serial No. V289,462

2 Claims.

(Granted underthe act of March 31883, as l amended April 30, 1928; 370G. 757) i The invention described herein may be Amanufactured and usedby or for the Government of the United States for governmental purposesl without the payment to me of any royalty thereon, in accordance withthe provisions of the act of April 30, 1928 (ch. 460, 45 Stat. L. 467).

This invention relates to a control device for indexing andphototranscription machines.

An object of the invention is to improve on certain elements and meansdisclosed in my United States Patent #2,121,061 of June 21, 1938, inthat I now provide a more simple and positive means for accuratelystopping the record bearer or carrier at the registering station uponthe breaking of an electrical circuit established by the operation andcooperation of the various parts described in the above mentionedpatent.

A further object is to provide a reliable means for assuring that theoperation of the machine may be resumed after the stoppage of the recordcarrier at the registering station and thereafter continued until suchtime as an appropriate circuit is again established to eifect stoppage.

A still further object is to provide means whereby the starting of themachine in its neXt cycle may be conveniently effected by either manualor automatic control.

The single figure of the drawing is, for the most part, a reproductionof Figure 10 of Patent 2,121,061, and reference characters correspondingwith those used upon the drawing of the l patent are employed here in sofar as is necessary to describe the parts of the instant structure thatmore immediately and directly cooperate with the parts of the patentedstructure.

This patent discloses a method of and apparatus for the indexing andphototranscription of records, and has for its object the provision of amachine for 'supplementing and extending the known art relating to thecompilation, maintenance, and tabulation of records. In this art therehas been developed a method of producing records microphotographicallyupon a lm, and my patent referred to, among other things, disclosesmeans for'feeding the film to a registering station and stopping it foraccurate registery at said station, for purposes stated in the patent,the stopping means including the shaft 62| rotating continuously duringthe operation of the machine y until such time as it is desired to stopthe film at the registery station. This shaft in the patent is shown ascarrying the lm feeding drum and also a disk 401 having stops 401thereon to be engaged by a projection carried by a rod reciprocatedcontinuously by a cam carried by the disk, there being a notch in therod to be engaged by a latch 402 carried by the armature of a niagnet400 to arrest the movement of the rod with its projection in the path ofmovement of a stop 401 on the disk, to stop the film at the registerystation, the energization and deenergization of the magnet beingcontrolled by a mechanism controlling various circuits.

In the present construction, I simplify the film stopping means byeliminating the-reciprocating rod and the cam of the patent and producean arrangement wherein the latch of themagnet 400 directly engages astop on thefdisk 401, and provide an additional magnet for assuring thatthe operationof the machine may be resumed after the stoppage of therecord carrier at the registery station until it is again'stopped by`establishing an appropriate circuit.

The gure is a circuit diagram of the machine of the patent abovereferred to, having associated therewith the improved control featuresforming part of the driving mechanism to effect the stoppage of themachine at the desired point or registering station, forviewing,'project ing, photographing, and for other purposes. f

Referring to the drawing, 62| designates Ithe driving shaft ofthemachine, whichlshaft'carries a feed .driving drum 6|0, which' shaft andy drum may'correspond in all respectstoithe. sim-f.

ilarly marked parts of the above mentioned pat1.

ent. On this shaft is keyed the locking disk 401 provided at quarterintervals with a shouldered stop 401 normally out of the path ofmovement of a projection or latch r402 mounted on an armature 898. Thearmature is apertured for the passage of three similar rods 4, 5 and 6,upon which the armature can freely move. The rods are rmly secured to asuitable magnet base of insulating material or material from which theymay be insulated. Between the armature and base are magnets 3 and 400exerting, when energized, `a pull on the armature against the tension ofspiral springs 40| whose normal tendency is to keep the latch 402projected into the path of movement of the stops on disk 401 when themagnets are deenergized. The magnets withdraw said armature and latchfrom latchng position when either or both magnets are energized.

In operation, with a machine running at high speed, current is suppliedto the motor (M) from main supply wire H0, motor terminal |l1,

through motor and terminal |16, to lead ||5A Current` contacts |58 and59, which are closed, rthrough lead |62, through magnet 400 and back tosupply wire |5I. Magnet 400 is thus energized, attracting armature 898,causing the latch 492 carried thereby to be held out of the path ofmovement of a stop on disk 401; consequently, the disk is free torotate, which it is continuously doing until such time as it is desiredto stop a record at the registering station. y

After a selection has been made and the record, a lmin the presentinstance, has been run forward a predetermined distance or amount andthen reversed and run backin the mannery and by the means described inPatent-#2,121,061, the dwell I23a of cam |23 allows roller |35 carriedby pivoted armature 31 to drop.- This movement `Y of the armature opensthe contacts |58 and |59 which breaks the circuit through magnet 400,deenergizing said magnet and'allowing the springs 40! to project thearmature 898 to position wherein thelatch 402.will be engaged by a stop497', thus stopping the machine at the proper time and place. Afterstopping the record at the registering station, and after this operationhas served its purpose, whatever that may be within the possibilities ofthe contrivance, and when it is desired to again start the machine, this`can be done either automatically or manually-automatically by closingcontacts 2% and 228 by cam 221, and manually -by the closing of switch225. In either event the result is the resetting of the magnets 232, 242and magnet 3, all of which are included in the reset circuit. Upon theenergization of magnet 3, the armature 898 is attracted against thetension of springs @lll and its latch 492 is Withdrawnvfrom the stop 401of disk 407, allowing said disk to rotate.

C'oincidental with the operation of the reset circuit just described,armatures lla and lla were retracted by the magnets and I9! through theresetting of the keyboard circuit eX- plained in the patent hereinbeforementioned. With retraction of armature Illa, contacts H2 and l I3 wereagain closed; consequently starting the motor in clockwise direction athigh speed.

" Iclaim:

1. In a machine of the character described, means for arresting themovement of a traveling record carrier at a definite point, including anormally continuously rotating shaft, record feeding means actuated bysaid shaft, a member rotated by said shaft and provided with stops, twomagnets, an armature common to both and provided with a latch fordirectly engaging a stop on said member to arrest the movement of saidmember, means for constantly urging the armature and consequently itslatch toward the stop member, a different electrical circuit for eaclimagnet through which said magnets are energized to hold the armature andits latch out of the path of movement of the stops and deenergized tomake operative the means for urging the armature toward the stops tomove the latch into the path ofY movement of the stops, one of saidmagnets operating to attract the armature to a disengaged position whilethe stop member is rotating and the other magnet operating to disengagethe stopengaging means from the stop when said stop member isstationary, thereby assuring the resumption of operation o f the machineafter stoppage of .the recordVV carrier at a denite point.

' 2, Ina machine of the character described, means for arresting themovement of a traveling record carrier at a denite point, including anormally continuously rotating shaft, record feeding ing means actuatedby said shaft, a member rotated by said shaft and provided with stops,two magnets, an armature common to both and provided with a latch fordirectly engaging a stop on said member to arrest the movement of saidmember, means for constantly urging the armature and consequently itslatch toward the stop member, a different electrical circuit for eachmagnet through which said magnets are energized to hold the armature andits latch out of the path of movement of the stops and deenergized tokmake operative the means for urging the armature toward the stops tomove the latch into the path of movement of the stops, one of saidmagnetsv operating to attract the armature to a disengaged positionwhile the stop member is rotating and the other magnet operating todisengage the stop-engaging means from the stop when said stop member isstationary, thereby assuring the resumption of operation of the machineafter stoppage of the record carrier at a definite point, means forautomatically actuating the circuits, and means for manually actuatingsaid circuits.

LEONARD Gr. TOWNSEND.

